This is a cotton dress shirt by Yves Dorsey. It's likely from the 90s. I purchased it from a vintage clothing shop in Tokyo that specializes in one-of-a-kind items. It's made of smooth, wrinkle-resistant cotton. The color is a charcoal gray iridescent, and although it's difficult to capture in photos, it has a beautiful blue gradation that appears depending on the angle and curves. Size: L-XL equivalent Shoulder width: 53cm Length: 82cm Sleeve length: 62cm Width: 58cm